38 lines
1.1 KiB
Ruby
38 lines
1.1 KiB
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class TurnIssuesDueDateIndexToPartialIndex < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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# Set this constant to true if this migration requires downtime.
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DOWNTIME = false
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NEW_INDEX_NAME = 'idx_issues_on_project_id_and_due_date_and_id_and_state_partial'
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OLD_INDEX_NAME = 'index_issues_on_project_id_and_due_date_and_id_and_state'
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disable_ddl_transaction!
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def up
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add_concurrent_index(
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:issues,
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[:project_id, :due_date, :id, :state],
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where: 'due_date IS NOT NULL',
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name: NEW_INDEX_NAME
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)
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# We set the column name to nil as otherwise Rails will ignore the custom
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# index name and remove the wrong index.
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remove_concurrent_index(:issues, nil, name: OLD_INDEX_NAME)
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end
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def down
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add_concurrent_index(
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:issues,
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[:project_id, :due_date, :id, :state],
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name: OLD_INDEX_NAME
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)
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remove_concurrent_index(:issues, nil, name: NEW_INDEX_NAME)
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end
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end
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